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A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

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Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).

Molecular Weight

The mass of one molecule of a nonionic substance in atomic mass units.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Native State

Refers to the occurrence of an element in an uncombined or free state in nature.

 

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Alkaline Earth Metals

Group IIA metals

Free Energy, Gibbs Free Energy

The thermodynamic state function of a system that indicates the amount of energy available for the system to do useful work at constant T and P.

Amine Complexes

Complex species that contain ammonia molecules bonded to metal ions.

Unsaturated Hydrocarbons

Hydrocarbons that contain double or triple carbon-carbon bonds.

Weak Electrolyte

A substance that conducts electricity poorly in a dilute aqueous solution.

Born-Haber Cycle

A series of reactions (and accompanying enthalpy changes) which, when summed, represents the hypothetical one-step reaction by which elements in their standard states are converted into crystals of ionic compounds (and the accompanying enthalpy changes.)

Standard Molar Enthalphy of Formation

The amount of heat absorbed in the formation of one mole of a substance in a specified state from its elements in their standard states.

Saturated Solution

Solution in which no more solute will dissolve.

Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

Plasma

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Half-Reaction

Either the oxidation part or the reduction part of a redox reaction.

Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.

Essential Oil

A plant extract that has a distinctive odour or flavour.

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

Hess' Law of Heat Summation

The enthalpy change for a reaction is the same whether it occurs in one step or a series of steps.